<template>
	<view>
		<view class="search-box">
			<uni-search-bar @input="input" :radius="100" cancelButton="none"></uni-search-bar>
		</view>
		<view class="sugg-list" v-if="searchResults.length!==0">
			<view class="sugg-item" v-for="item in searchResults" :key="item.goods_id" @click="gotoDetail(item)">
				<view class="goodz-name">
					{{item.goods_name}}
				</view>
				<uni-icons type="arrowright"></uni-icons>
			</view>
		</view>
		<!-- 搜索历史 -->
		<view class="history-box" v-else>
			<view class="history-title">
				<text>搜索历史</text>
				<uni-icons type="trash" size="17" @click="clean"></uni-icons>
			</view>
			<view class="history-list">
				<uni-tag :text="item" v-for="(item,index) in histories" :key="index" @click="gotoGoodsList(item)"></uni-tag>
			</view>

		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				timer: null,
				kw: '',
				// 搜索结果列表
				searchResults: [],
				historyList: ['a', 'app']
			};
		},
		onLoad() {
			this.historyList = JSON.parse(uni.getStorageSync("kw") || '[]')
		},
		methods: {
			input(e) {
				clearTimeout(this.timer)
				this.timer = setTimeout(() => {
					this.kw = e.value
					this.getSearchList()
				}, 500)
			},
			async getSearchList() {
				if (this.kw === "") {
					this.searchResults = []
					return
				}
				const {
					data
				} = await uni.$http.get('/api/public/v1/goods/qsearch', {
					query: this.kw
				})
				if (data.meta.status !== 200) return uni.$showMsg()
				this.searchResults = data.message
				this.saveSearchHistory()
			},
			gotoDetail(item) {
				uni.navigateTo({
					url: "/subpkg/goods_detail/goods_detail?goods_id=" + item.goods_id
				})
			},
			saveSearchHistory() {
				// this.historyList.push(this.kw)

				const set = new Set(this.historyList)
				set.delete(this.kw)
				set.add(this.kw)
				this.historyList = Array.from(set)

				// 历史搜索记录持久存储
				uni.setStorageSync("kw", JSON.stringify(this.historyList))

			},
			clean() {
				this.historyList = []
				uni.setStorageSync("kw", "[]")
			},
			gotoGoodsList(item) {
				uni.navigateTo({
					url: "/subpkg/goods_list/goods_list?query=" + item
				})
			}
		},
		computed: {
			histories() {
				return [...this.historyList].reverse()
			}
		}
	}
</script>

<style lang="scss">
	.search-box {
		position: sticky;
		top: 0;
		z-index: 999;
	}

	.sugg-list {
		padding: 0 5px;

		.sugg-item {
			font-size: 12px;
			padding: 13px 0;
			border-bottom: 1px solid #efefef;
			display: flex;
			align-items: center;
			justify-content: space-between;
		}

		.goodz-name {
			white-space: nowrap;
			overflow: hidden;
			text-overflow: ellipsis;
			margin-right: 3px;

		}

	}

	.history-title {
		display: flex;
		justify-content: space-between;
		align-items: center;
		height: 40px;
		font-size: 13px;
		border-bottom: 1px solid #efefef;
	}

	.history-list {
		display: flex;
		flex-wrap: wrap;

		.uni-tag {
			margin-top: 5px;
			margin-right: 5px;
		}

	}
</style>
